CN112877894B - Wireless jacquard guide bar and warp knitting machine using same - Google Patents

Abstract

The utility model provides a wireless merchant blocks sley bar and uses this wireless merchant to block tricot machine of sley bar, includes a sley bar base, at least one locates control circuit board unit, at least one printed circuit board and two at least are installed on the sley bar base printed circuit board enables and holds electrically conductive thimble, printed circuit board's output with the messenger end of control circuit board unit is electric to be connected. Through setting up the thimble on printed circuit board, make on the one hand the thimble more firm install on printed circuit board, on the other hand improves the installation intensity of thimble on printed circuit board and makes the thimble not fragile to prolong the life of thimble and printed circuit board, played the effect of killing two birds with one stone.

Description

Wireless jacquard guide bar and warp knitting machine using same

Technical Field

The invention relates to the field of warp knitting machines, in particular to a wireless jacquard guide bar and a warp knitting machine using the same.

Background

The traditional piezoelectric jacquard driving system comprises a Gu Kahe jacquard driving device, the structure of the piezoelectric jacquard driving system is mainly that N jacquard devices are installed on guide bars, wherein the jacquard devices are installed on the guide bars, the jacquard driving device is usually installed on a warp knitting frame, each jacquard needle needs an independent driving electric cable, and a plurality of driving electric cables are connected between the driving device and the jacquard guide bars.

The Chinese invention patent (application number: 03801846.2, publication number: CN 100436685C) discloses a swing position adjusting device of a guide bar in a double needle bar Raschel warp knitting machine.

Chinese Utility model patent (application No. 01802918.3, publication No. CN 1272493C) discloses a jacquard device of a warp knitting machine.

Be provided with sixteen merchant card needles on current common merchant card comb, need the corresponding sixteen way drive circuit of looks adaptation to be used for supplying power to piezoelectric ceramic element for realizing accurate control sixteen merchant card needles, piezoelectric ceramic element produces deformation after the circular telegram, thereby drive sixteen merchant card needles and carry out jacquard weave work, traditional tricot machine is connected with piezoelectric ceramic element looks electricity through external drive circuit board, and at the great occupation space of external drive circuit board relatively, still can set up the drive circuit the same with original simultaneously if can reduce the area of circuit board, just help reducing the whole occupation space of tricot machine.

In order to solve the problem that the number of cable ropes for connecting a jacquard guide bar on a warp knitting machine is various and unattractive, a concept of 'wireless jacquard' is provided, the 'wireless' called in the 'wireless jacquard' mentioned in the patent is not a wireless effect of eliminating the cable ropes in a radio signal transmission mode generally understood, the 'wireless jacquard' still needs to use one cable rope to be connected with a power supply so as to supply power to a piezoelectric ceramic element on the jacquard guide bar, and the 'wireless' specifically refers to that the cable ropes can be processed by adopting a hidden or storage method or other power supply structures so that the appearance effect of the jacquard guide bar achieves an approximately wireless impression, the problem that the number of cable ropes for connecting the jacquard guide bar on the warp knitting machine is various and unattractive is solved, so that the external impression of the jacquard guide bar is more attractive, and finally, the N jacquard guide bars are supplied with one cable rope.

Disclosure of Invention

The invention provides a wireless jacquard guide bar and a warp knitting machine using the same, and mainly aims to overcome the defect that a plurality of electric cables need to be arranged on the jacquard guide bar.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a wireless merchant card sley bar, includes a sley bar base, at least one locates control circuit board unit, an at least printed circuit board and two at least installations on the sley bar base printed circuit board makes and holds electrically conductive thimble, printed circuit board's output with the messenger end of control circuit board unit is connected electrically.

Furthermore, the guide bar further comprises at least one first mounting groove arranged on the guide bar base and used for mounting the printed circuit board, and the first mounting groove is positioned below the control circuit board unit.

Furthermore, the combined type guide bar base comprises at least one guide bar bed used for installing the guide bar base, at least one insulating seat arranged on the guide bar bed and at least two conductive bars arranged in the insulating seat at intervals in an electric isolation mode, one side face of each conductive bar is embedded in the insulating seat, the other side face of each conductive bar is exposed, and at least one thimble is abutted to the other side face of each conductive bar correspondingly.

Furthermore, at least two strip-shaped guide grooves are formed in the insulating base, and each guide groove is internally provided with one corresponding conducting strip.

Furthermore, the thimble comprises a guide sleeve which is arranged on the input end of the printed circuit board and can conduct electricity and a needle head which is arranged on the guide sleeve and can elastically stretch out and draw back.

Furthermore, the control circuit board unit comprises at least one main control circuit board arranged on the guide bar base and at least one drive circuit board which can be plugged and installed on the main control circuit board, the output end of the main control circuit board is electrically connected with the enabling end of the drive circuit board, the output end of the drive circuit board is electrically connected with the enabling end of the piezoelectric ceramic element, and the enabling end of the main control circuit board is electrically connected with the output end of the printed circuit board.

Furthermore, the device also comprises at least one first connector used for connecting the main control circuit board and the driving circuit board, one end of the first connector is arranged on the main control circuit board, the other end of the first connector is arranged on the driving circuit board, and the output end of the main control circuit board is electrically connected with the enabling end of the driving circuit board in a mode of arranging the first connector.

Furthermore, still include a connecting circuit board, connecting circuit board includes that a third circuit board, a plurality of interval are located slot on third circuit board one side and locating second connector on the third circuit board opposite side, piezoceramics component's enable end is inserted and is established and install on the slot, the one end of second connector is located on the third circuit board, the other end of second connector is located on the dirver circuit board, make the third circuit board with but the electricity of plugging and unplugging between the dirver circuit board is connected through setting up the second connector.

A jacquard device comprises at least more than one jacquard guide bar.

A warp knitting machine comprises at least one jacquard guide bar.

Compared with the prior art, the invention has the beneficial effects that:

1. the thimble welding structure is simple in structure, the thimble is welded and installed on the printed circuit board, on one hand, the thimble is more firmly installed on the printed circuit board, the installation strength of the thimble on the printed circuit board is improved, the thimble is not easy to damage, and therefore the service life of the thimble and the printed circuit board is prolonged, on the other hand, the thimble is used for conducting electricity, the appearance effect without a cable is achieved, and the effect of killing two birds with one stone is achieved.

2. According to the invention, the guide sleeve is arranged to elastically and telescopically install the needle head in the guide sleeve, so that the length of the needle head can be conveniently adjusted, and the needle head can be better abutted against the conductive bar.

3. According to the invention, the printed circuit board, the thimble and the control circuit board unit are separately arranged, so that the printed circuit board is not influenced by heating of the control circuit board unit, the printed circuit board only needs to be replaced independently even if the printed circuit board is damaged, the control circuit board does not need to be replaced, independent operation of the control circuit board is effectively protected, the printed circuit board only needs to be replaced with the thimble and the drive circuit board in a targeted manner after being damaged, production cost of replacing parts in later maintenance is reduced, the thimble is arranged to be electrically connected with an external power supply, electric cables on the jacquard comb are reduced, the electric cables on the jacquard comb are fewer and more attractive, and the effect of killing two birds with one stone is achieved.

4. In the invention, the main control circuit board and the drive circuit board which can be plugged and unplugged on the main control circuit board form a double-layer circuit board structure, the electronic component with larger heat productivity is arranged on the main control circuit board, and the electronic component with smaller heat productivity is arranged on the drive circuit board.

5. According to the invention, the first piezoelectric ceramic piece driving circuit is arranged on the upper surface of the second circuit board, the second piezoelectric ceramic piece driving circuit is arranged on the lower surface of the second circuit board, and more piezoelectric ceramic piece driving circuits are effectively arranged by utilizing two side parts of the second circuit board.

6. In the invention, the second connector is arranged to enable the driving circuit board and the third circuit board to be inserted and connected together in a pluggable manner, so that the third circuit board, the piezoelectric ceramic element unit and the jacquard needle mechanism which can be normally used can be continuously used only by independently replacing the driving circuit board when a new driving circuit board is replaced in a later period, or the driving circuit board which can be normally used can be continuously used without replacing only by independently replacing the third circuit board, the piezoelectric ceramic element unit and the jacquard needle mechanism when a new third circuit board or a new piezoelectric ceramic element is replaced in a later period, so that the replacement and maintenance cost of parts in the later period is reduced.

Drawings

FIG. 1 is a schematic view of the present invention.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a block diagram of the main control circuit board.

Fig. 4 is a block diagram of the driving circuit board.

Fig. 5 is a circuit diagram of a piezoelectric ceramic piece driving circuit.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

Referring to fig. 1 and 2, a wireless jacquard guide bar and a warp knitting machine using the same, the warp knitting machine includes at least one jacquard device for guiding yarn, the jacquard device includes at least one jacquard guide bar and at least one guide bar bed 2 for installing the jacquard guide bar, at least one insulating seat 54 disposed on the guide bar bed 2 and at least two conductive bars 53 disposed in the insulating seat 54 at intervals and electrically isolated from each other, one side of the conductive bar 53 is embedded in the insulating seat 54, the other side of the conductive bar 53 is exposed, the insulating seat 54 is provided with at least two elongated guide grooves 541, and each guide groove is correspondingly provided with a conductive bar 53. The conductive strip 53 may be made of conductive metal copper material, and the control circuit board unit disposed on the guide bar base includes at least one main control circuit board 21 disposed on the guide bar base and at least one driving circuit board 31 pluggable to the main control circuit board 21.

Referring to fig. 1, 2, 3 and 4, the jacquard guide bar apparatus in this embodiment includes a guide bar base 1 installed on a guide bar bed 2, a jacquard needle mechanism (not shown) installed on the front end of the guide bar base 1, at least one piezoelectric ceramic element 35 installed on the guide bar base 1 for driving the jacquard needle mechanism (not shown), at least one main control circuit board 21 installed on the guide bar base 1 and at least one driving circuit board 31 installed on the main control circuit board 21, a connecting circuit board 4 installed above the guide bar base 1, an upper cover plate 16 detachably covering the upper side of the driving circuit board 31, at least one main control medium 64 installed on the driving circuit board 31, at least one first connector 30 for connecting the main control circuit board 21 and the driving circuit board 31, a first installation slot 15 installed on the bottom of the guide bar base 1, a printed circuit board 51 installed in the first installation slot 15, at least two printed circuit boards 51 soldered to the printed circuit board 52 capable of being installed on the top, at least one first connector 30 for connecting the main control circuit board 21 and the driving circuit board 31, a first installation slot 15 installed on the guide bar base 1, at least one second mounting groove 62 installed on the guide bar base 43 for inserting the first mounting base 17 into the first mounting groove 45 and inserting the second mounting groove 62 installed on the guide bar base 17 for inserting the guide bar base 17.

Referring to fig. 1 and 2, the guide bar base 1 includes a base portion 13 having a long strip shape, a plurality of needle grooves 14 spaced apart from each other at a front end of the base portion 13 for mounting a guide needle, a plurality of groove portions 15 spaced apart from each other at the base portion 13, and at least one protrusion 63 provided at a bottom of the second mounting portion 132.

Referring to fig. 1 and 2, the base portion 13 includes a first mounting portion 131 provided at one side of the groove portion 15 and a second mounting portion 132 provided at the other side of the groove portion 15, and the needle groove 14 is specifically spaced at a front end portion of the first mounting portion 131 in the present embodiment.

Referring to fig. 1 and 2, the first mounting groove 15 is located below the control circuit board unit, the first mounting groove 15 is specifically provided in the second mounting portion 132 in the present embodiment, the first mounting groove 15 is located below the main control circuit board 21, and the guide bar base 1 may be an aluminum base.

Referring to fig. 1 and 2, the output end of the printed circuit board 51 is electrically connected to the enable end of the control circuit board unit, and the enable end of the thimble 52 extends toward the outer side surface of the guide bar base 1.

Referring to fig. 1 and 2, at least one thimble 52 is correspondingly abutted on the other side surface of each conductive strip 53.

Referring to fig. 1 and 2, the thimble 52 includes a conductive sleeve disposed on the input end of the pcb 51 and a flexible needle mounted on the conductive sleeve, wherein one end of the needle is connected to the other side of the conductive strip 53, and a spring is disposed in the conductive sleeve, one end of the spring is mounted on the inner wall of the conductive sleeve, and the other end of the spring is connected to the needle, so that the needle is mounted on the conductive sleeve in a flexible manner.

Referring to fig. 1 and 2, the output terminal of the printed circuit board 51 in this embodiment is electrically connected to the enable terminal of the main control circuit board 21. The enabling end of the printed circuit board 51 is electrically connected to the external power source through the thimble 52, the conductive strip 53 and a cable for connecting the external power source, and the thimble 52 may be made of conductive copper material.

Through setting up thimble 52 welded mounting on printed circuit board 51, make thimble 52 more firm install on printed circuit board 51 on the one hand, improve the installation intensity of thimble on printed circuit board 51 and make thimble 52 not fragile to prolong thimble 52 and printed circuit board 51's life, on the other hand uses the thimble to conduct and has played the impression effect of no cable, thereby played the effect of killing two birds with one stone.

By arranging the printed circuit board 51, on one hand, the printed circuit board 51 is used for installing the thimble 52 and connecting the control circuit board unit, and on the other hand, the printed circuit board 51 can also be used for arranging circuits with other additional functions, thereby achieving the effect of dual purposes.

The needle head can be elastically and telescopically arranged in the guide sleeve by arranging the guide sleeve, so that the length of the needle head can be conveniently adjusted, and the needle head can be better abutted against the conductive bar 53.

Referring to fig. 1 and 2, the other end of the conductive bar 53 is electrically connected to an external power source through an electric cable, and the electric energy is transmitted by setting a length using the thimble 52 and the conductive bar 53 instead of a part of the cable rope, so that the jacquard bar is reduced in length of the electric cable inside the jacquard bar.

Through setting up a printed circuit board 51 and thimble 52 alone, on the one hand, make printed circuit board 51 not receive the influence of temperature on the main control circuit board 31, even if printed circuit board 51 damages and also only need to change printed circuit board 51 alone, and thereby drive circuit board 31 and main control circuit board 21 do not need to be changed and drive circuit board 21's independent operation has effectively been protected, printed circuit board 51 only need pertinence change printed circuit board 51 and thimble 52 and need not change drive circuit board 31 and main control circuit board 21 after damaging, reduce the manufacturing cost of later maintenance renewal part, on the other hand sets up thimble 52 and is connected with external power supply looks electricity, the electric cable line on the merchant card comb has been reduced, make the cable line on the merchant card comb still more pleasing to the eye less, play the effect of killing two birds with one stone.

Referring to fig. 1 and 2, the jacquard needle mechanism (not shown in the figures) includes a plurality of guide needles disposed at intervals on the needle groove 14, a guide hole disposed on one end of the guide needle, and a long-strip-shaped connecting member disposed at one end and connected with the other end of the guide needle, the piezoelectric ceramic element 35 is wrapped and covered on the two side surfaces of the connecting member, the needle groove 14 is disposed at the front of the guide bar base 1, and the front of the guide bar base 1 in the length extending direction is defined as the front of the guide bar base 1.

Referring to fig. 1 and 2, the upper cover 16 is mounted on the top of the mounting post 43 by using the second locking member 17 in the embodiment, such that the upper cover 16 is covered above the driving circuit board 31, the heat conducting medium 64 is disposed between the upper cover 16 and the driving circuit, and the rear end of the upper cover 16 extends toward the rear of the guide bar base 1 to form a convex extension 47.

Referring to fig. 1 and 2, through setting up a bellied extension 47 that upper plate 16 extends the formation to the rear of sley bar base, on the one hand operating personnel is on hand upper plate 16 in the installation on being convenient for install the merchant card sley on the warp knitting machine, also be convenient for operating personnel to take the merchant card sley, on the other hand is through setting up extension piece operating personnel hand and taking extension 47 position, avoid operating personnel to hold the damage that other positions of merchant card sley produced or produce the pollution to merchant card sley because of operating personnel dirt on hand to the merchant card sley in the installation, play the effect of protection to merchant card sley, play the dual-purpose effect of a thing.

Referring to fig. 1 and 2, the upper cover plate 16 is covered on the heat conducting medium 64, the upper side of the heat conducting medium 64 is abutted to the lower side of the upper cover plate 16, the lower side of the heat conducting medium 64 is covered on the upper side of the driving circuit board 31, the upper cover plate 16 can be made of a metal material with heat conductivity, the upper cover plate 16 can be further provided with a plurality of heat dissipation holes 65, on one hand, the heat dissipation holes 65 are arranged to facilitate the reduction of the weight of the upper cover plate 16, on the other hand, the heat dissipation holes 65 are arranged to facilitate the flow of air flow to dissipate heat of the driving circuit board 31, so that the effect of killing two birds with one stone is achieved, the heat conducting medium 64 can be heat conducting silica gel, the appearance of the heat conducting medium 64 can be square, and the heat absorption generated on the driving circuit board by the heat conducting medium 64 accelerates the heat dissipation of the driving circuit board 31.

Referring to fig. 1 and 2, one end of the first connector 30 is disposed on the main control circuit board 21, and the other end of the first connector 30 is disposed on the driving circuit board 31, and the output end of the main control circuit board 21 and the enable end of the driving circuit board 31 are electrically connected by disposing the first connector 30.

Referring to fig. 3 and 4, the output terminal of the main control circuit board 21 is electrically connected to the enable terminal of the driving circuit board 31, the output terminal of the driving circuit board 31 is electrically connected to the enable terminal of the piezoelectric ceramic element 35, and the heat generation amount of the main control circuit board 21 is larger than that of the driving circuit board 31.

Referring to fig. 2 and 4, the driving circuit board 31 includes at least one second circuit board 32 and a plurality of piezoelectric ceramic driving circuits 33 disposed on the second circuit board 32.

Referring to fig. 2 and 4, the piezoceramic wafer driving circuit 33 includes at least one first piezoceramic wafer driving circuit 321 disposed on the upper surface of the second circuit board 32 and at least one second piezoceramic wafer driving circuit 322 disposed on the lower surface of the second circuit board 32.

Referring to fig. 4, by arranging the first piezoelectric ceramic piece driving circuit 321 on the upper surface of the second circuit board 32 and the second piezoelectric ceramic piece driving circuit 322 on the lower surface of the second circuit board 32, more piezoelectric ceramic piece driving circuits 33 are arranged by effectively utilizing two side portions of the second circuit board 32, compared with the case that the piezoelectric ceramic piece driving circuit 33 is arranged on only one side of the second circuit board 32, the piezoelectric ceramic piece driving circuits are arranged on two side surfaces of the second circuit board 32, so that the number of the piezoelectric ceramic piece driving circuits which need two second circuit boards 32 with the same size to be installed when the traditional second circuit board 32 is installed on one side is realized, the effect of reducing resource waste of the second circuit board 32 is achieved, on the other hand, the integration level of the piezoelectric ceramic piece driving circuits 33 on the jacquard bar is favorably improved, the whole appearance structure of the jacquard bar is not changed by reasonably utilizing the inner space of the jacquard bar for circuit arrangement, the jacquard bar does not need to be externally connected with the driving circuit board through a cable rope, the electric cable rope on the jacquard bar is reduced, the jacquard machine is more beautiful, and the effect of two strokes is achieved.

Referring to fig. 1 and 2, the driving circuit board 31 and the main control circuit board 21 are separately arranged, so that the main control circuit board 21 generates heat without affecting the normal operation of the driving circuit board 31, the service life of the driving circuit board 31 is prolonged, and the operation stability of the first piezoceramic wafer driving circuit 321 and the second piezoceramic wafer driving circuit 322 on the second circuit board 32 is improved.

Referring to fig. 1, the guide bar base 1 and the driving circuit board 31 form a first air duct cavity 44, and the main control circuit board 21 is disposed in the first air duct cavity 44.

Referring to fig. 1, the first air duct cavity 44 is arranged, so that on one hand, the driving circuit board 31 and the main control circuit board 21 are favorably cooled, and on the other hand, the first air duct cavity 44 can be used as a space for accommodating electronic components on the main control circuit board 21, so that the space of the first air duct cavity 44 is effectively utilized, and the dual-purpose effect is achieved.

Referring to fig. 1 and 2, the connection circuit board 4 includes a third circuit board 42, a plurality of slots 41 spaced apart from each other on one side of the third circuit board 42, and a second connector 34 disposed on the other side of the third circuit board 42, an enable terminal of each piezoelectric ceramic element 35 is inserted into and mounted on the slot 41, one end of the second connector 34 is disposed on the third circuit board 42, the other end of the second connector 34 is disposed on the driving circuit board 31, the third circuit board 42 and the driving circuit board 31 are electrically connected to each other in a pluggable manner by disposing the second connector 34, the enable terminal of the third circuit board 42 is electrically connected to the output terminal of the second circuit board 32 by the second connector 34, and thus the output terminal of the piezoelectric ceramic element driving circuit 33 is electrically connected to the enable terminal of the piezoelectric ceramic element 35.

Referring to fig. 1 and 2, the first circuit board 22 is located above the printed circuit board 51, the second circuit board 32 is located above the first circuit board 22, and the third circuit board 42 is located between the second circuit board 32 and the piezoelectric ceramic element 35 in this embodiment.

Referring to fig. 1 and 3, the first connector 30 includes at least one first socket portion disposed on one side of the first circuit board 22 and at least one first pin disposed on one side of the second circuit board 32, and the first socket portion and the first pin are pluggable to each other and electrically connected together, so that the driving circuit board 31 is pluggable to the main control circuit board 21. The first connector 30 may be a PIN header PIN connector, preferably a PIN header PIN connector with sixteen PINs.

Referring to fig. 1, 2 and 4, the second connector 34 in this embodiment includes at least one second PIN 341 disposed on one side of the third circuit board 42 and a second socket 342 disposed on one side of the second circuit board 32 and adapted to the second PIN 341, the second PIN 341 is pluggable to the second socket 342, and the second connector 34 may be a PIN header connector.

The first pin and the second pin 341 may be pins made of conductive copper metal material.

Referring to fig. 1, the driving circuit board 31, the main control circuit board 21, the mounting posts 43 and the socket form a first air duct cavity 44.

Referring to fig. 1 and 2, a first mounting hole 431 matched with the mounting column 43 is formed in the second circuit board 32, a second mounting hole 432 matched with the mounting column 43 is formed in the first circuit board 22, a third mounting hole 433 is formed in the front portion of the upper cover plate 16, a fourth mounting hole 434 is formed in the guide bar base 1, an internal thread is formed in the fourth mounting hole 434, and the first mounting hole 431, the second mounting hole 432, the third mounting hole 433 and the fourth mounting hole 434 are all arranged on the same vertical line.

Referring to fig. 1 and 2, a fifth mounting hole 71 is formed in the top of the mounting seat 45, a sixth mounting hole 72 adapted to the fifth mounting hole 71 is formed in the upper rear portion of the upper cover plate 16, the rear portion of the upper cover plate 16 is fixedly mounted on the top of the mounting seat 45 by using a third locking member 73 which passes through the sixth mounting hole 72 and is locked in the fifth mounting hole 71, and the third locking member 73 is a screw.

Referring to fig. 1 and 2, the mounting post 43 is provided therein with a mounting groove having an internal thread, the mounting hole extends from the top end of the mounting post 43 to the bottom end of the mounting post 43, the second mounting hole 432 is locked with the second locking member 17, and the second locking member 17 is used to pass through the third mounting hole 433, the first mounting hole 431, the second mounting hole 432, the mounting groove and the fourth mounting hole 434 from top to bottom.

Referring to fig. 1 and 2, the bottom of the second locking member 17 can be locked in the fourth mounting hole 434, so that the driving circuit board 31 is mounted on the top of the mounting post 43, and the upper cover 16 is also mounted. The second locking member 17 passes through the first installation hole 431 and the second installation hole 432 to limit the driving circuit board 31 and the main control circuit board 21.

Referring to fig. 1 and 2, the bottom of the mounting post 43 is disposed on the fourth mounting hole 434, the number of the mounting posts 43 may be two, the second mounting hole 432 and the fourth mounting hole 434 may be both disposed at two intervals, the mounting post 43 may be disposed on one side of the first socket portion, and the mounting post 43 passes through the second mounting hole 432, so that the first circuit board 22 is positioned and mounted on the mounting post 43.

Referring to fig. 1 and 2, a first compression spring 433 may be further disposed on the upper side of the first mounting hole 431, the first compression spring 433 is located between the upper cover plate 16 and the driving circuit board 31, the first compression spring 433 is sleeved on the second locking member 17, and the first compression spring 433 is configured to limit the lowest point of the upper cover plate 16 during mounting of the upper cover plate 16 so that the upper cover plate 16 does not press the piezoelectric ceramic plate driving circuit 33 on the second circuit board 32.

Referring to fig. 1 and 2, the driving circuit board 31 has a convex shape, one side of the driving circuit board 31 extends into the first groove 61, the extending convex portion of the driving circuit board 31 extends into the first groove 61, so as to increase the area of the driving circuit board 31, the first groove 61 and the driving circuit board 31 surround to form a second air duct cavity 74, and the second air duct cavity 74 is communicated with the first air duct cavity 44.

Referring to fig. 1 and 2, by providing the first groove 61, on one hand, the area of the second circuit board 32 is increased by effectively utilizing the space of the first groove 61 for laying the piezoelectric ceramic sheet driving circuit 33, on the other hand, the first groove 61 and the second circuit board 32 surround the second air duct cavity 74 to improve the heat dissipation effect of the surface of the driving circuit board 31, so as to achieve a dual-purpose effect of a thing, on the one hand, the mounting base 45 can provide a force-bearing point for holding, so that an operator can hold and take the mounting base 45, and on the other hand, the mounting base 45 is also used for accommodating and mounting the second circuit board 32, so as to arrange the second circuit board 32 with a larger area, thereby achieving a dual-purpose effect of a thing.

Referring to fig. 1 and 2, one end of the first locking member 46 is connected to the mounting partition 63, the other end of the first locking member 46 is mounted on the outer side surface of the mounting seat 45, and the second groove 62 is communicated with the second air duct cavity 74. The main control circuit board 21, the bump 63 and the second mounting portion 132 form a third air duct cavity in an enclosing manner, and the third air duct cavity is located below the main control circuit board 21.

Referring to fig. 1 and 2, the specific first locking member 46 in this embodiment includes a socket head cap screw and a second compression spring sleeved on the socket head cap screw, two threaded holes are provided on the assembly partition 63 at intervals, one end of the socket head cap screw penetrates through the threaded hole to enable the assembly partition 63 to be installed on the socket head cap screw, one end of the second compression spring abuts against one side face of the assembly partition 63, the other end of the second compression spring abuts against the inner side wall face of the second groove 62, the position of the assembly partition 63 is adjusted by rotating the socket head cap screw, and the bottom of the assembly partition 63 is clamped in a clamping groove of the bar bed 2.

Referring to fig. 1 and 2, a conductive plate is disposed at the other end of the connecting member, the conductive plate is inserted into the slot 41, and the conductive plate is fixedly mounted on the slot 41 by welding, so that the piezoelectric ceramic element 35 and the third circuit board 42 are connected into a whole, the other end of the connecting plate is connected to the kinetic energy-enabled end of the yarn guide needle, one end of the connecting member passes through the groove portion 15 and extends into the second mounting portion 132, and the other end of the connecting member extends into the first mounting portion 131. One end of the conductive sheet is electrically connected to the piezoelectric ceramic element 35, and the other end of the conductive sheet is electrically connected to the third circuit board 42, and the conductive sheet may be made of conductive metal copper material. The electrical energy on the third circuit board 42 is transmitted to the piezo-ceramic element 35 via the conductive pads.

The connecting sheet and the slot 41 are vertically inserted and arranged, and the cross section of the connecting sheet and the slot 41 which are inserted and arranged is in a cross shape.

The piezoelectric ceramic element 35 can be a long-strip-shaped piezoelectric ceramic piece, and the piezoelectric ceramic piece deforms when a preset voltage is applied to the piezoelectric ceramic element 35, so that the connecting piece is driven by the piezoelectric ceramic element 35 to deform, the kinetic energy output end of the connecting piece swings, and the yarn guide needle swings under the driving of the connecting piece after the kinetic energy output end of the connecting piece swings. The direction of the swing of the yarn guide needle is the direction of the swing of the kinetic energy output end of the connecting piece.

Referring to fig. 1 and 2, the number of the yarn guide needles may be sixteen, and the number of the needle grooves 14 and the groove portions 15 is adapted to the number of the yarn guide needles, so that the number of the adapted groove portions 15 may be sixteen, and the number of the adapted needle grooves 14 may be sixteen. The number of the guide needles is determined according to the process processing requirement, and the number of the needle grooves 14 and the number of the groove parts 15 can be adaptively determined according to the number of the guide needles.

Referring to fig. 1, 2 and 4, taking the number of the yarn guide needles as an example, the number of the adapted piezoelectric ceramic pieces is sixteen, the driving circuit for driving the piezoelectric ceramic pieces to deform is the piezoelectric ceramic piece driving circuit 33, the enable end of each piezoelectric ceramic piece is connected with one piezoelectric ceramic piece driving circuit 33 for supplying power, when the number of the piezoelectric ceramic elements 35 is sixteen, the number of the adapted piezoelectric ceramic piece driving circuits 33 is sixteen, and one pair of the adapted piezoelectric ceramic piece driving circuits 33 supplies power to each piezoelectric ceramic element 35, so as to drive the piezoelectric ceramic elements 35 to deform and further drive the yarn guide needles, the sixteen piezoelectric ceramic piece driving circuits 33 are divided into two groups of piezoelectric ceramic piece driving circuits 33 with the same number of eight, the first piezoelectric ceramic piece driving circuit 321 is the group of eight piezoelectric ceramic pieces with the same number, and the second piezoelectric ceramic piece driving circuit 322 is the other group of eight groups of piezoelectric ceramic piece driving circuits 33 with the same number.

Referring to fig. 1, 2 and 4, in the present embodiment, the second circuit board 32 is formed by integrally connecting a square part and a protrusion 481 disposed on one side of the square 482, such that the second circuit board 32 has a convex shape, the eight piezoelectric ceramic wafer driving circuits 33 are respectively arranged at five piezoelectric ceramic wafer driving circuits 33 transversely arranged on the upper surface of the square 482, the three piezoelectric ceramic wafer driving circuits 33 transversely arranged on the upper surface of the protrusion 481, such that eight piezoelectric ceramic wafer driving circuits 33 are formed, the five piezoelectric ceramic wafer driving circuits 33 transversely arranged on the lower surface of the square 482, the three piezoelectric ceramic wafer driving circuits 33 transversely arranged on the lower surface of the protrusion 481, such that eight piezoelectric ceramic wafer driving circuits 33 are formed, and the eight piezoelectric ceramic wafer driving circuits 33 arranged on the upper surface of the first circuit board 22 and the sixteen piezoelectric ceramic wafer driving circuits 33 arranged on the lower surface are formed to supply power to each piezoelectric ceramic element 35.

Referring to fig. 1 and 2, the piezoceramic wafer drive circuit 33 and the piezoceramic element 35 may be electrically connected by a second connector 34.

Referring to fig. 3, the main control circuit board 21 includes at least one first circuit board 22 disposed on the guide bar base 1, at least one line protection circuit 23, at least one voltage regulator circuit 25, at least one communication detection circuit 24, at least one digital control boost power supply 28, at least one digital-to-analog circuit 27, at least one processor unit 26, and at least one driving pre-stage 29, wherein the line protection circuit 23, the voltage regulator circuit 25, the communication detection circuit 24, the digital control boost power supply 28, the digital-to-analog circuit 27, the processor unit 26, and the driving pre-stage 29 are all disposed on the first circuit board 22.

Referring to fig. 3, the enable terminal of the line protection circuit 23 is electrically connected to the output terminal of the printed circuit board 51 for receiving 40-45V dc, the output terminal of the line protection circuit 23 is electrically connected to the enable terminal of the voltage regulator circuit 25, the output terminal of the line protection circuit 23 is electrically connected to the enable terminal of the communication detection circuit 24, the output terminal of the voltage regulator circuit 25 is electrically connected to the enable terminal of the digital-to-analog converter 27, the output terminal of the voltage regulator circuit 25 is electrically connected to the enable terminal of the processor unit 26, the output terminal of the communication detection circuit 24 is electrically connected to the enable terminal of the processor unit 26, the output terminal of the processor unit 26 is electrically connected to the enable terminal of the digital-to-analog converter 27, the output terminal of the digital-to-analog converter 27 is electrically connected to the enable terminal of the second connector 34, the output terminal of the digital-to-analog converter 27 is electrically connected to the enable terminal of the digital-to-analog converter 28, the output terminal of the digital-to-analog converter 26 is electrically connected to the piezoelectric ceramic chip 34, and the piezoelectric ceramic chip 34 is connected to the piezoelectric ceramic chip 34 via the piezoelectric converter 34, and the piezoelectric ceramic chip 34.

Referring to fig. 3, the relative positions of the circuit layout of the line protection circuit 23, the voltage regulator circuit 25, the communication detection circuit 24, the digitally controlled boost power supply 28, the digital-to-analog circuit 27, the processor unit 26, and the driver pre-stage 29 may be changed adaptively according to the size of the layout area in which the circuits can be laid on the surface of the main control circuit board 21.

Referring to fig. 4 and 5, the piezoceramic wafer driving circuit 33 includes a power VCC1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a transistor Q1, a transistor Q2, a transistor Q3, a transistor Q4, a diode D1, and a diode D2, which are input from the first connector 30.

Referring to fig. 5, one end of the resistor R1 is connected to a signal INPUT terminal INPUT, the other end of the resistor R1 is electrically connected to the base of the transistor Q2, the cathode of the diode D1 is connected in parallel to the collector of the transistor Q2, the collector of the transistor Q2 and the base of the transistor Q1 are connected in parallel to one end of the resistor R2, and the other end of the resistor R2 is connected in parallel to the collector of the transistor Q1.

Referring to fig. 5, one end of the resistor R3 is electrically connected to the output terminal OUT-a, and the other end of the resistor R3, the anode of the diode D1, and one end of the resistor R4 are connected in parallel to the emitter of the transistor Q1.

Referring to fig. 5, the other end of the resistor R4 is connected to the base of the diode Q4, the emitter of the transistor Q2 is connected in parallel to the emitter of the diode Q4, the collector of the transistor Q1, one end of the resistor R5, and the collector of the transistor Q3 are respectively connected in parallel to the power source VCC1, and the other end of the resistor R5 is connected in parallel to the base of the transistor Q3.

Referring to fig. 5, the collector of the transistor Q4 and the base of the transistor Q3 are connected in parallel to the cathode of the diode D2, the anode of the diode D2 and one end of the resistor R6 are connected in parallel to the emitter of the transistor Q3, and the other end of the resistor R6 is electrically connected to the output terminal OUT-B.

Referring to fig. 5, the transistor Q1, the transistor Q2, the transistor Q3, and the transistor Q4 are NPN transistors. The collectors of transistors Q2 and Q4 and the negative terminal of power supply VCC1 are grounded in parallel.

Referring to fig. 5, the piezoceramic wafer driving circuit 33 acts on a piezoceramic element 35, the output terminal OUT-a is connected to one side surface of the piezoceramic element 35, the output terminal OUT-B is connected to the other side surface of the piezoceramic element 35, and the other end of the piezoceramic element 35 is connected in parallel to the negative electrode of the power supply VCC 1.

Referring to fig. 5, the circuit operation process of the present embodiment includes the following steps: the piezoelectric ceramic piece driving circuit 33 only has one INPUT end, two output ends of OUT-A and OUT-B, and the output end is connected with the piezoelectric ceramic element 35 and is used for driving the swinging action of the piezoelectric ceramic element 35. The piezoelectric ceramic element 35 can be equivalent to two capacitors, and in order to operate the piezoelectric ceramic element 35 normally, it is necessary to discharge while charging. The side charged by the piezoelectric ceramic element 35 is deformed and swings to one side.

Refer to fig. 5. In this embodiment, the square wave driving signal is INPUT to the INPUT and the precursor circuit, and the level of the square wave signal INPUT to the INPUT and the precursor circuit is opposite. For example, if the INPUT is high, then the INPUT of the predecessor circuit is low, and vice versa. Thus, both output terminals are always in a state of being charged while being discharged, and the driving of the piezoelectric ceramic element 35 is completed. The whole circuit consists of a left circuit and a right circuit which are completely symmetrical, and the working principles are completely the same.

The operation principle thereof will be explained below

1: when INPUT is high, Q2 is turned on, the collector of Q1 is low, and Q1 is turned off. The output end discharges the capacitance at one end of the piezoelectric ceramic element 35 through R3 and D1 and through Q2. It is important to note that at the beginning of the discharge, D1 is turned on and Q1 is placed in a reverse biased state, Q1 is turned off quickly and completely off, and there is almost no power consumption.

2: when INPUT is high, the precursor circuit is INPUT low, Q4 is turned off, and Q4 is equivalent to open circuit. At this time, R4 is amplified by the Q3 current, and then the other capacitor of the piezoelectric ceramic element 35 is charged through R6. At this time, Q4 is in an off state, and almost no power is consumed.

When the levels are opposite, the working process is completely the same.

Compared with the prior art, the driving circuit has the advantages that circuit elements are few, only NPN transistors are used, the consistency is good during manufacturing, the cost is lower, only half of circuits work during working, the power consumption is lower than that of other driving circuits, and the reliability is good.

Through the circuit layout that sets up two diodes of four triode cooperations, can guarantee that the short circuit phenomenon can not appear in the power. The whole circuit has low power consumption, low heat productivity and simple circuit. The reliability of the piezoelectric ceramic piece driving circuit 33 can be greatly improved, the service lives of the piezoelectric ceramic piece driving circuit 33 and the jacquard guide bar are prolonged, and the repair cost is saved.

The occupied area is reduced by only arranging one input port, and the integration level of the piezoelectric ceramic piece driving circuit 33 on the second circuit board 32 is improved.

The output voltage of the digital control boosting power supply is set to be 200V, and the output voltage of the driving front stage is set to be 40V.

By arranging a numerical control boosting power supply to be matched with a driving front stage for use, and increasing a group of low electric driving voltages, on one hand, the positive driving voltage is counteracted, so that the voltage actually falling on two ends of the piezoelectric ceramic element 35 is reduced; on the other hand, it plays a reverse force, and is the same with positive power direction, and both dynamics add, and ultimate effect is to increase the swing dynamics, reaches the purpose of taking into account extension performance and life-span. Therefore, the requirement of a customer on the performance of the jacquard guide bar can be met while the driving voltage of the piezoelectric ceramic element 35 is increased, the service life of the jacquard guide bar is effectively prolonged, and the use and production cost of the customer is reduced.

In the invention, the driving circuit board 31 and the main control circuit board 21 are arranged in a pluggable manner to form a double-layer circuit board structure, the electronic component with larger heat productivity is arranged on the main control circuit board 21, and the electronic component with smaller heat productivity is arranged on the driving circuit board 31, on one hand, the driving circuit board unit 31 and the main control circuit board 21 are separately arranged, so that the normal operation of the driving circuit board 31 is not influenced by the heat generated by the main control circuit board 21, the service life of the driving circuit board 31 is prolonged, on the other hand, after one of the driving circuit board 31 or the main control circuit board 21 is damaged, only the single damaged driving circuit board 31 or the main control circuit board 21 needs to be purposefully plugged and replaced, and the driving circuit board 31 and the main control circuit board 21 do not need to be replaced together, thereby reducing the maintenance cost of replacing the driving circuit board 31 or the main control circuit board 21 in later maintenance.

The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using this concept shall fall within the scope of the present invention.

Claims (9)

1. The utility model provides a wireless merchant blocks comb which characterized in that: including a sley bar base, at least one is located control circuit board unit, an at least printed circuit board and two piece are installed on the sley bar base can hold the thimble that leads electricity, printed circuit board's output with the messenger of control circuit board unit is connected mutually, control circuit board unit includes at least one is located master control circuit board and at least one pluggable on the sley bar base install in drive circuit board on the master control circuit board, master control circuit board's output with drive circuit board's messenger end is connected mutually, drive circuit board's output is connected mutually with piezoceramics component's messenger end electricity, master control circuit board's messenger end with the output of printed circuit board is connected mutually.

2. The cordless jacquard bar of claim 1, wherein: still include at least one locate be used for the installation on the sley bar base printed circuit board's first mounting groove, first mounting groove is located the below of control circuit board unit.

3. The cordless jacquard bar of claim 1, wherein: still include at least one and be used for the installation the sley bar bed of sley bar base, at least one are located insulating seat and two at least intervals on the sley bar bed are located be the conducting strip that the electricity kept apart the setting in the insulating seat, a side of conducting strip bury underground in the insulating seat, the opposite side of conducting strip is personally submitted naked state, and the butt that all corresponds on the another side of every conducting strip has at least one the thimble.

4. A cordless jacquard bar as claimed in claim 3, wherein: the insulating seat is provided with at least two strip-shaped guide grooves, and each guide groove is internally provided with one corresponding conducting strip.

5. The cordless jacquard bar of claim 1, wherein: the thimble comprises a guide sleeve which is arranged on the enabling end of the printed circuit board and can conduct electricity and a needle head which is arranged on the guide sleeve and can elastically stretch out and draw back.

6. The cordless jacquard bar of claim 1, wherein: the driving circuit board is connected with the output end of the main control circuit board through the first connector.

7. The cordless jacquard bar of claim 1, wherein: still include a connecting circuit board, connecting circuit board includes that a third circuit board, a plurality of interval are located slot on third circuit board one side and locating second connector on the third circuit board opposite side, the enable end of piezoceramics component is inserted and is established and install on the slot, the one end of second connector is located on the third circuit board, the other end of second connector is located on the dirver circuit board, make the third circuit board with pluggable electricity is connected between the dirver circuit board through setting up the second connector.

8. A jacquard apparatus, characterized by: comprising at least one wireless jacquard bar, said wireless jacquard bar being as claimed in any one of claims 1-7.

9. A warp knitting machine is characterized in that: comprising at least one wireless jacquard bar, said wireless jacquard bar being as claimed in any one of claims 1-7.

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